Brasiliocroton mamoninha
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| PEBerry & Cordeiro |
Brasiliocroton mamoninha is one of two species of the genus Brasiliocroton from the milkweed family. It only occurs in eastern Brazil .
description
Vegetative characteristics
Brasiliocroton mamoninha grows as a tree up to 15 meters or more high. The trunk diameter is up to 30 centimeters or more. The trunk is furrowed to grooved and the bark is relatively smooth.
The lighter underneath, longer-stalked leaves are alternate. They are ovate or elliptical to obovate, with entire margins and acuminate to acuminate. They are up to 8-12 inches long and 4-6 inches wide and they are slightly hairy on both sides. The nerve is threefold at the base and the central vein is pinnate forward. There are small and sloping stipules . There are two glands on the upper petiole, at the base of the leaf.
Generative characteristics
Brasiliocroton mamoninha is monoecious mixed sex monoecious . Terminal, stalked and panicley , mostly mixed inflorescences are formed. They are up to 20 centimeters long and short-haired, they contain mostly male flowers and a few female flowers in the upper area. The greenish-whitish, short-stalked flowers are usually five-fold with a double or single flower envelope. The male flowers have a hairy calyx on the outside and overgrown in the lower area, with five free lobes. The free and spreading, egg-shaped petals are hairy inside and out. There are 20–30 stamens with basal hairy stamens and rounded anthers and five extrastaminal, larger nectar glands . The male flowers are underlaid with small bracts . The female flowers have a hairy inside and outside and about half-grown calyx with five triangular lobes and are without petals. They have a kuzhaarigen, Upper permanent and roundish ovary with three, almost sessile, two pesky scars , the scar elongated branches are oberseits rüschig and purple. And there are five cushion-shaped nectar glands.
Short-haired and small, rounded and three- to four-part, as well as rust-brownish fissure fruits (schizocarp) are formed. They are up to 20 millimeters in size. The thin, leathery and divided exocarp is sloping and underneath are the separate, single-compartment and woody capsules (Cocci, Mericarp). The small, ellipsoidal and brown seeds have a small caruncula and they are up to about 7-10 millimeters in size.
Systematics
The first description of the genus Brasiliocroton and the species Brasiliocroton mamoninha was made in 2005 by Paul Edward Berry and Inês Cordeiro in Syst. Bot. 30: 357.
literature
- Paul E. Berry, Inês Cordeiro, A. Ch. Wiedenhoeft, MA Vitorino-Cruz: Brasiliocroton, a New Crotonoid Genus of Euphorbiaceae ss from Eastern Brazil. In: Systematic Botany. 30 (2), 2005, pp. 357-365, doi: 10.1600 / 0363644054223585 , online at researchgate.net.